1 | {
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2 | "$schema": "http://json-schema.org/draft-07/schema#",
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3 | "$id": "https://raw.githubusercontent.com/ajv-validator/ajv/master/lib/refs/json-schema-secure.json#",
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4 | "title": "Meta-schema for the security assessment of JSON Schemas",
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5 | "description": "If a JSON AnySchema fails validation against this meta-schema, it may be unsafe to validate untrusted data",
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6 | "definitions": {
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7 | "schemaArray": {
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8 | "type": "array",
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9 | "minItems": 1,
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10 | "items": {"$ref": "#"}
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11 | }
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12 | },
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13 | "dependencies": {
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14 | "patternProperties": {
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15 | "description": "prevent slow validation of large property names",
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16 | "required": ["propertyNames"],
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17 | "properties": {
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18 | "propertyNames": {
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19 | "required": ["maxLength"]
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20 | }
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21 | }
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22 | },
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23 | "uniqueItems": {
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24 | "description": "prevent slow validation of large non-scalar arrays",
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25 | "if": {
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26 | "properties": {
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27 | "uniqueItems": {"const": true},
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28 | "items": {
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29 | "properties": {
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30 | "type": {
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31 | "anyOf": [
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32 | {
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33 | "enum": ["object", "array"]
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34 | },
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35 | {
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36 | "type": "array",
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37 | "contains": {"enum": ["object", "array"]}
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38 | }
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39 | ]
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40 | }
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41 | }
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42 | }
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43 | }
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44 | },
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45 | "then": {
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46 | "required": ["maxItems"]
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47 | }
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48 | },
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49 | "pattern": {
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50 | "description": "prevent slow pattern matching of large strings",
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51 | "required": ["maxLength"]
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52 | },
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53 | "format": {
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54 | "description": "prevent slow format validation of large strings",
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55 | "required": ["maxLength"]
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56 | }
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57 | },
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58 | "properties": {
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59 | "additionalItems": {"$ref": "#"},
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60 | "additionalProperties": {"$ref": "#"},
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61 | "dependencies": {
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62 | "additionalProperties": {
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63 | "anyOf": [{"type": "array"}, {"$ref": "#"}]
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64 | }
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65 | },
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66 | "items": {
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67 | "anyOf": [{"$ref": "#"}, {"$ref": "#/definitions/schemaArray"}]
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68 | },
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69 | "definitions": {
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70 | "additionalProperties": {"$ref": "#"}
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71 | },
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72 | "patternProperties": {
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73 | "additionalProperties": {"$ref": "#"}
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74 | },
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75 | "properties": {
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76 | "additionalProperties": {"$ref": "#"}
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77 | },
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78 | "if": {"$ref": "#"},
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79 | "then": {"$ref": "#"},
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80 | "else": {"$ref": "#"},
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81 | "allOf": {"$ref": "#/definitions/schemaArray"},
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82 | "anyOf": {"$ref": "#/definitions/schemaArray"},
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83 | "oneOf": {"$ref": "#/definitions/schemaArray"},
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84 | "not": {"$ref": "#"},
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85 | "contains": {"$ref": "#"},
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86 | "propertyNames": {"$ref": "#"}
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87 | }
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88 | }
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